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About the test:

The iOS Online Test uses scenario-based MCQs to evaluate candidates on their proficiency in developing iOS mobile applications, including their knowledge of Swift programming language, UIKit, Core Data, Auto Layout, memory management, and debugging. The test includes a coding question to evaluate hands-on programming skills and aims to assess a candidate's ability to design and develop iOS mobile applications that adhere to industry best practices and standards.

Covered skills:

  • Swift Programming
  • Views and controllers
  • Control Flow
  • Arrays and Collections
  • Classes and Objects
  • Error handling and debugging
  • Core Data
  • iOS Basics (Swift)
  • Variables and Data Types
  • Functions
  • Optionals
  • Memory Management
  • Networking
  • Testing and Debugging

9 reasons why
9 reasons why

Adaface iOS (Swift) Test is the most accurate way to shortlist iOS Developers



Reason #1

Tests for on-the-job skills

The iOS (Swift) Online Test helps recruiters and hiring managers identify qualified candidates from a pool of resumes, and helps in taking objective hiring decisions. It reduces the administrative overhead of interviewing too many candidates and saves time by filtering out unqualified candidates at the first step of the hiring process.

The test screens for the following skills that hiring managers look for in candidates:

  • Proficient in Swift Programming to develop iOS applications
  • Solid understanding of iOS Basics (Swift)
  • Ability to design and implement Views and controllers in iOS
  • Knowledge of Variables and Data Types in Swift
  • Capable of implementing Control Flow in Swift
  • Skilled in writing and using Functions in Swift
  • Ability to work with Arrays and Collections in Swift
  • Familiarity with Optionals in Swift
  • Understanding of Classes and Objects in Swift
  • Knowledge of Memory Management in iOS
  • Experience in error handling and debugging in iOS
  • Understanding of Networking in iOS
  • Familiarity with Core Data in iOS
  • Ability to perform Testing and Debugging in iOS
Reason #2

No trick questions

no trick questions

Traditional assessment tools use trick questions and puzzles for the screening, which creates a lot of frustration among candidates about having to go through irrelevant screening assessments.

View sample questions

The main reason we started Adaface is that traditional pre-employment assessment platforms are not a fair way for companies to evaluate candidates. At Adaface, our mission is to help companies find great candidates by assessing on-the-job skills required for a role.

Why we started Adaface
Reason #3

Non-googleable questions

We have a very high focus on the quality of questions that test for on-the-job skills. Every question is non-googleable and we have a very high bar for the level of subject matter experts we onboard to create these questions. We have crawlers to check if any of the questions are leaked online. If/ when a question gets leaked, we get an alert. We change the question for you & let you know.

How we design questions

These are just a small sample from our library of 10,000+ questions. The actual questions on this iOS Online Test will be non-googleable.

🧐 Question

Medium

Completion Handlers
Views
Animations
Solve
Consider the following iOS (Swift) code snippet:
 image
What will happen when this view controller appears?

A) The squareView will move 100 points to the right instantly and then change its background color to blue.
B) The squareView will not move, and its background color will not change.
C) The squareView will change its background color to blue instantly and then move 100 points to the right over 1 second.
D) The squareView will move 100 points to the right and change its background color to blue simultaneously over 1 second.
E) The squareView will move 100 points to the right over 1 second, and the background color will change to blue after 1 second.

Medium

UI Responder Chain
UI
Views
Interaction.
Solve
Consider the following iOS (Swift) code snippet:
 image
When the user taps on the CustomButton, what will be the output? Note that UIButton is a subclass of UIControl by default.

A) Only "CustomButton touchesBegan" will be printed.
B) "CustomButton touchesBegan" and "CustomView touchesBegan" will be printed.
C) "CustomButton touchesBegan", "CustomView touchesBegan", and "ViewController touchesBegan" will be printed.
D) "CustomButton touchesBegan" and "ViewController touchesBegan" will be printed.
E) No output will be printed.

Medium

ViewController Buggy Code
Solve
Here's two different ways to write the same code in iOS (Swift):
 image
Which of the following statements are correct?
 image

Medium

Data Provider DispatchQueue
Closures
Asychronous operations.
Solve
Consider the following code snippet:
 image
What will be printed after the code execution?

Medium

Property Observers
OOPs
Solve
Consider the following Swift code snippet:
 image
What does the code print after execution?
A) 800, -100, 80, 80
B) 800, 800, 80, 72
C) 1000, 800, 100, 72
D) 800, 800, 80, 80
E) 800, 0, 80, 80

Medium

Class Destructor
OOPs
Solve
What does the following Swift code output?
 image

Easy

Defer blocks
Solve
What does the following Swift code output?
 image

Easy

Lazy Variables
Solve
What does the following Swift code output?
 image

Easy

Registration Queue
Logic
Queues
Solve
We want to register students for the next semester. All students have a receipt which shows the amount pending for the previous semester. A positive amount (or zero) represents that the student has paid extra fees, and a negative amount represents that they have pending fees to be paid. The students are in a queue for the registration. We want to arrange the students in a way such that the students who have a positive amount on the receipt get registered first as compared to the students who have a negative amount. We are given a queue in the form of an array containing the pending amount.
For example, if the initial queue is [20, 70, -40, 30, -10], then the final queue will be [20, 70, 30, -40, -10]. Note that the sequence of students should not be changed while arranging them unless required to meet the condition.
⚠️⚠️⚠️ Note:
- The first line of the input is the length of the array. The second line contains all the elements of the array.
- The input is already parsed into an array of "strings" and passed to a function. You will need to convert string to integer/number type inside the function.
- You need to "print" the final result (not return it) to pass the test cases.

For the example discussed above, the input will be:
5
20 70 -40 30 -10

Your code needs to print the following to the standard output:
20 70 30 -40 -10

Medium

Visitors Count
Strings
Logic
Solve
A manager hires a staff member to keep a record of the number of men, women, and children visiting the museum daily. The staff will note W if any women visit, M for men, and C for children. You need to write code that takes the string that represents the visits and prints the count of men, woman and children. The sequencing should be in decreasing order. 
Example:

Input:
WWMMWWCCC

Expected Output: 
4W3C2M

Explanation: 
β€˜W’ has the highest count, then β€˜C’, then β€˜M’. 
⚠️⚠️⚠️ Note:
- The input is already parsed and passed to a function.
- You need to "print" the final result (not return it) to pass the test cases.
- If the input is- β€œMMW”, then the expected output is "2M1W" since there is no β€˜C’.
- If any of them have the same count, the output should follow this order - M, W, C.
🧐 QuestionπŸ”§ Skill

Medium

Completion Handlers
Views
Animations

2 mins

iOS
Solve

Medium

UI Responder Chain
UI
Views
Interaction.

3 mins

iOS
Solve

Medium

ViewController Buggy Code

3 mins

iOS
Solve

Medium

Data Provider DispatchQueue
Closures
Asychronous operations.

3 mins

Swift
Solve

Medium

Property Observers
OOPs

2 mins

Swift
Solve

Medium

Class Destructor
OOPs

2 mins

Swift
Solve

Easy

Defer blocks

2 mins

Swift
Solve

Easy

Lazy Variables

2 mins

Swift
Solve

Easy

Registration Queue
Logic
Queues

30 mins

Coding
Solve

Medium

Visitors Count
Strings
Logic

30 mins

Coding
Solve
🧐 QuestionπŸ”§ SkillπŸ’ͺ DifficultyβŒ› Time
Completion Handlers
Views
Animations
iOS
Medium2 mins
Solve
UI Responder Chain
UI
Views
Interaction.
iOS
Medium3 mins
Solve
ViewController Buggy Code
iOS
Medium3 mins
Solve
Data Provider DispatchQueue
Closures
Asychronous operations.
Swift
Medium3 mins
Solve
Property Observers
OOPs
Swift
Medium2 mins
Solve
Class Destructor
OOPs
Swift
Medium2 mins
Solve
Defer blocks
Swift
Easy2 mins
Solve
Lazy Variables
Swift
Easy2 mins
Solve
Registration Queue
Logic
Queues
Coding
Easy30 minsSolve
Visitors Count
Strings
Logic
Coding
Medium30 minsSolve
Reason #4

1200+ customers in 75 countries

customers in 75 countries
Brandon

With Adaface, we were able to optimise our initial screening process by upwards of 75%, freeing up precious time for both hiring managers and our talent acquisition team alike!


Brandon Lee, Head of People, Love, Bonito

Reason #5

Designed for elimination, not selection

The most important thing while implementing the pre-employment iOS Online Test in your hiring process is that it is an elimination tool, not a selection tool. In other words: you want to use the test to eliminate the candidates who do poorly on the test, not to select the candidates who come out at the top. While they are super valuable, pre-employment tests do not paint the entire picture of a candidate’s abilities, knowledge, and motivations. Multiple easy questions are more predictive of a candidate's ability than fewer hard questions. Harder questions are often "trick" based questions, which do not provide any meaningful signal about the candidate's skillset.

Science behind Adaface tests
Reason #6

1 click candidate invites

Email invites: You can send candidates an email invite to the iOS Online Test from your dashboard by entering their email address.

Public link: You can create a public link for each test that you can share with candidates.

API or integrations: You can invite candidates directly from your ATS by using our pre-built integrations with popular ATS systems or building a custom integration with your in-house ATS.

invite candidates
Reason #7

Detailed scorecards & benchmarks

View sample scorecard
Reason #8

High completion rate

Adaface tests are conversational, low-stress, and take just 25-40 mins to complete.

This is why Adaface has the highest test-completion rate (86%), which is more than 2x better than traditional assessments.

test completion rate
Reason #9

Advanced Proctoring


Learn more

About the iOS (Swift) Assessment Test

Why you should use Pre-employment iOS (Swift) Online Test?

The iOS Online Test makes use of scenario-based questions to test for on-the-job skills as opposed to theoretical knowledge, ensuring that candidates who do well on this screening test have the relavant skills. The questions are designed to covered following on-the-job aspects:

  • Ability to write clean and efficient Swift code
  • Knowledge of iOS app development using Swift
  • Proficiency in using views and controllers in iOS applications
  • Understanding of variables and data types in Swift
  • Experience with control flow statements in Swift
  • Expertise in creating and using functions in Swift
  • Familiarity with arrays and collections in Swift
  • Understanding of optionals and their usage in Swift
  • Knowledge of creating and working with classes and objects in Swift
  • Proficiency in memory management techniques in iOS development
  • Ability to handle errors and debug Swift code

Once the test is sent to a candidate, the candidate receives a link in email to take the test. For each candidate, you will receive a detailed report with skills breakdown and benchmarks to shortlist the top candidates from your pool.

What topics are covered in the iOS (Swift) Online Test?

  • Swift Programming

    Swift programming language is a powerful and modern language used for developing iOS applications. It provides a concise and expressive syntax, which makes code easier to read and maintain. Testing candidates on Swift programming ensures that they have a good understanding of the language and can write clean and efficient code.

  • iOS Basics (Swift)

    iOS basics in Swift covers the fundamental concepts and principles of iOS development. It includes topics such as creating user interfaces, managing application lifecycles, and utilizing built-in iOS features. Candidates with a strong grasp of iOS basics are equipped to build robust and user-friendly applications on the iOS platform.

  • Views and Controllers

    Views and controllers are crucial components in iOS development. Views are responsible for presenting the user interface and receiving user input, while controllers handle the logic and behavior of the application. Assessing candidates on views and controllers ensures that they have the skills to design and implement well-structured and interactive interfaces.

  • Variables and Data Types

    Variables and data types are essential concepts in programming. Understanding variables allows developers to store and manipulate values, while data types define the kind of values that can be stored. Testing candidates on variables and data types ensures that they are proficient in handling different data and can effectively manage memory resources in their applications.

  • Control Flow

    Control flow refers to the order in which statements are executed in a program. It includes concepts such as conditional statements, loops, and branching. Evaluating candidates on control flow helps determine their ability to implement logical and efficient algorithms, ensuring that their code executes correctly and efficiently.

  • Functions

    Functions are reusable blocks of code that perform specific tasks. They allow developers to organize their code and make it more modular and maintainable. Assessing candidates on functions ensures that they can write well-structured and efficient code, enabling them to solve complex problems and build scalable applications.

  • Arrays and Collections

    Arrays and collections are used to store and manage multiple values. They provide a way to organize and manipulate data efficiently. Testing candidates on arrays and collections ensures that they can work with complex data structures, enabling them to handle large amounts of data in their applications.

  • Optionals

    Optionals are a feature in Swift that allows for the representation of both a value and the absence of a value. They provide a safe and concise way to handle scenarios where a value may be missing or uncertain. Assessing candidates on optionals ensures that they have a solid understanding of handling optional values, reducing the likelihood of runtime errors and improving code reliability.

  • Classes and Objects

    Classes and objects are fundamental concepts in object-oriented programming. Classes define the blueprint for creating objects, while objects are instances of classes. Evaluating candidates on classes and objects ensures they can design and implement well-structured and reusable code, fostering code reusability and maintainability.

  • Memory Management

    Memory management is the process of managing computer memory resources to ensure efficient utilization and prevent memory leaks. It involves allocating and deallocating memory when needed, as well as handling reference counting and memory cleanup. Testing candidates on memory management ensures that they can write memory-efficient code, minimizing resource consumption and improving application performance.

  • Error Handling and Debugging

    Error handling and debugging are essential skills for any developer. Error handling involves anticipating and handling errors that may occur during program execution, while debugging is the process of identifying and fixing issues in code. Assessing candidates on error handling and debugging ensures that they can effectively troubleshoot and resolve issues, ensuring the stability and reliability of their applications.

  • Networking

    Networking is a critical aspect of many iOS applications, enabling communication with remote servers and APIs. It involves sending and receiving data over the internet and handling network-related tasks such as authentication and encryption. Evaluating candidates on networking ensures that they have the knowledge and skills to implement secure and efficient network communication in their applications.

  • Core Data

    Core Data is a framework used for data persistence in iOS applications. It provides an object-oriented approach to managing and persisting application data, including support for data modeling, data storage, and query execution. Testing candidates on Core Data ensures that they can effectively implement data storage and retrieval, enabling them to build robust and scalable data-driven applications.

  • Testing and Debugging

    Testing and debugging are critical phases in software development, ensuring the quality and stability of applications. Testing involves verifying that the application behaves as expected under various scenarios, while debugging involves identifying and fixing issues in the code. Assessing candidates on testing and debugging ensures that they can effectively validate and troubleshoot their applications, delivering high-quality and reliable software.

  • Full list of covered topics

    The actual topics of the questions in the final test will depend on your job description and requirements. However, here's a list of topics you can expect the questions for iOS Online Test to be based on.

    Swift Syntax
    Swift Functions
    Swift Variables
    Swift Control Flow
    Swift Arrays
    Swift Collections
    Swift Optionals
    Swift Classes
    Memory Management in iOS
    Error Handling in iOS
    Debugging in iOS
    Networking in iOS
    Core Data in iOS
    iOS Basics
    Views and Controllers in iOS
    iOS Testing
    Swift Data Types
    Swift Operators
    Swift Closures
    Swift Inheritance
    Swift Protocols
    Swift Extensions
    Swift Initialization
    Model-View-Controller (MVC)
    Auto Layout
    Xcode IDE
    SwiftUI
    Cocoa Touch Framework
    Interface Builder
    Storyboards
    Navigation Controller
    Table View
    Collection View
    Alerts and Action Sheets
    Gesture Recognizers
    User Defaults
    JSON Parsing
    URL Session
    Core Animation
    Auto-Release Pool
    Grand Central Dispatch
    SQLite
    Unit Testing in iOS
    UI Testing in iOS
    Code Review
    App Store Submission
    App Localization
    Push Notifications
    Keychain Access
    Background Execution
    Debug Symbols
    App Signing
    App Distribution
    App Store Provisioning

What roles can I use the iOS (Swift) Online Test for?

  • iOS Developer
  • Swift Developer
  • Mobile Developer

How is the iOS (Swift) Online Test customized for senior candidates?

For intermediate/ experienced candidates, we customize the assessment questions to include advanced topics and increase the difficulty level of the questions. This might include adding questions on topics like

  • Experience with networking in iOS applications
  • Knowledge of using Core Data for data persistence in iOS
  • Expertise in testing and debugging iOS applications
  • Understanding of key iOS design patterns and best practices
  • Experience in working with UIKit framework in iOS development
  • Familiarity with auto layout and constraints in iOS app design
  • Proficiency in using Core Animation and Core Graphics in iOS
  • Ability to work with push notifications and background tasks in iOS
  • Experience with integrating third-party libraries and frameworks in iOS
  • Knowledge of localization and internationalization in iOS development
  • Proficiency in working with Swift Package Manager and CocoaPods

The coding question for experienced candidates will be of a higher difficulty level to evaluate more hands-on experience.

Singapore government logo

The hiring managers felt that through the technical questions that they asked during the panel interviews, they were able to tell which candidates had better scores, and differentiated with those who did not score as well. They are highly satisfied with the quality of candidates shortlisted with the Adaface screening.


85%
reduction in screening time

iOS (Swift) Hiring Test FAQs

Can I combine multiple skills into one custom assessment?

Yes, absolutely. Custom assessments are set up based on your job description, and will include questions on all must-have skills you specify. Here's a quick guide on how you can request a custom test.

Do you have any anti-cheating or proctoring features in place?

We have the following anti-cheating features in place:

  • Non-googleable questions
  • IP proctoring
  • Screen proctoring
  • Web proctoring
  • Webcam proctoring
  • Plagiarism detection
  • Secure browser
  • Copy paste protection

Read more about the proctoring features.

How do I interpret test scores?

The primary thing to keep in mind is that an assessment is an elimination tool, not a selection tool. A skills assessment is optimized to help you eliminate candidates who are not technically qualified for the role, it is not optimized to help you find the best candidate for the role. So the ideal way to use an assessment is to decide a threshold score (typically 55%, we help you benchmark) and invite all candidates who score above the threshold for the next rounds of interview.

What experience level can I use this test for?

Each Adaface assessment is customized to your job description/ ideal candidate persona (our subject matter experts will pick the right questions for your assessment from our library of 10000+ questions). This assessment can be customized for any experience level.

Does every candidate get the same questions?

Yes, it makes it much easier for you to compare candidates. Options for MCQ questions and the order of questions are randomized. We have anti-cheating/ proctoring features in place. In our enterprise plan, we also have the option to create multiple versions of the same assessment with questions of similar difficulty levels.

I'm a candidate. Can I try a practice test?

No. Unfortunately, we do not support practice tests at the moment. However, you can use our sample questions for practice.

What is the cost of using this test?

You can check out our pricing plans.

Can I get a free trial?

Yes, you can sign up for free and preview this test.

I just moved to a paid plan. How can I request a custom assessment?

Here is a quick guide on how to request a custom assessment on Adaface.

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40 min tests.
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